A man in a bar has a couple of beers, and the
bartender tells him he owes $4.

"But I paid, don't you remember?" says
the customer.

"Okay," says the bartender, "If you
said you paid, you did."

The man then goes outside and tells the first
person he sees that the bartender can't keep track of whether his customers have paid.

The second man then ruses in, orders a beer and
later pulls the same stunt.

The barkeep replies, "If you say you paid,
I'll take your word for it."

Soon the customer goes into the street, sees an
old friend, and tells him how to get free drinks.

The man hurries into the bar and begins to drink
high-balls when, suddenly, the bartender leans over sand says, "You know, a funny
thing happened in here tonight. Two men were drinking beer, neither paid and both claimed
that they did. The next guy who tries that is going to get punched right in the
nose."